Edgae d



(NoModel.)

E. D. FELLOWS.

VEETIGAL FEED SEWING MACHINE. No. 282,874. Patented Aug. 7, 1883.

N. PETERS. Phohrulhygmphor, Washington, D. C.

UNrrno STATES 'ATENT Fries.

EDGAR D. FELLOWS, OF VATERTOWN, NEW YORK, ASSIGNOR TO THE DAVIS SEWINGMACHINE COMPANY, OF SAME PLACE.A

VERTICAL-FEED SEWING-MACHINE `-SPIEICIEICA'ZIIION forming part ofLetters Patent No. 282,874, dated August '7, 1883.

.Application filed February 1, 1893. (No model.) i

To all whom it may concern,.-

p Be it known that I, EDGAR D. FnLLows, of Vatertown, Jefferson county,New York, ha've invented a new and useful Improvement in Vertical-FeedSewing-Machines, which improvement is fully set forth in the following lwith it, an auxiliary vertical feed-bar or helperv bar is employed. Theinvention is shown herein as applied to amachine of this construction,although it is applicable generally to machines of the class indicated.

It consists, mainly, in the combination, with the vertical feedingdevices, of mechanism for controlling positively the position of thesaid devices at all points in their lateral or horizontal motion.

Heretofore the return motion of the feeding devices yhas been effectedby means of a spring or springs.v In the machine described in the PatentNo. 250, 053, to Thos. Carey, November 29, 1881, a return feed-dog isemployed; but in the normal operation the springs return the feedingdevices, and the feed-dog simply prevents the needle-cam roll or driver,by its action upon the heart-shaped needle-cam, from displacing theneedle-bar when the latter, with the helper-bar, has been brought to avertical position. Moreover, if the springs be omitted, the feedingdevices will be left free from both dogs a part of the time, so thatthey are not at all points positively controlled.

The invention further comprises certain special combinations of parts,as hereinafter indicated. i

The accompanying drawings illustrate the head of aDavis sewing-machineconstructed in accordance with the present invention, Figures l and 2being views in vertical section at right angles to the goose-neck orstationary arm of the machine, and in elevation looking to the right,the two views showing the feed mechanism in different positions; Fig. 3,a view in vertical section parallel to the goose-neck and in elevationlooking to the rear; Figs. 4 and 5, detail views; and Fig. 6, a viewsimilar to Fig. l, showing a modified construction.

A represents the cam house or head of the machine; A, the face-plate; B,the shaft head or disk of the'feed-cam; B, the needle-cam roll ordriver; C, the needle-bar 5 O,the needle-cam 5 D, the helper-bar; D',the presser-bar; E, the feed -lever or bellcrank; F, the regulatingyoke;G, the regulating-lever; I, the set-screw; J, the sliding cross-bar; K,the fixed stud; L, M, N, l), and R, rolls; Q, the shaft; S, the line ofcloth-plate; T, a cam-groove, and U a stud.

The needle-bar C 'and helper-bar D pass through slots in the roof andfloor of the camhouse A, or, more strictly, through slots formed in theiianges of the face-plate, and between the said flanges and thecorresponding walls of the cani-house. The slot at the top has the rollP at one end, Aand the said roll and the side walls and opposite endwall of the slot form xed guides, which allow the said bars to swinghorizontally or laterally in the plane of the feed movement, (at rightangles to the length of shaft Q,) as well as to reciprocate vertically.The slot at the bottom of thecamhouse is longer than the combined widthof the two bars, so as to permit the swinging motion above mentioned;but its width is equal to their common thickness, so as to-keep them yin the same plane of motion.

The needle-cam C is the ordinary grooved heart-cam, and is fixed to theneedle-bar. It is engaged by the roll or driver B, which is fastened onthe face of the revolving cam B, and which works in the groove in theneedlecam, so as to reciprocate the needle-bar vertil cally. Theneedle-bar is so connected with the helper-bar and presser-bar that ateach descent of the needle-bar the helper-bar is depressed and thepresser-bar lifted, and at each ascent the reverse operations takeplace. The

device used for this purpose is or may be the usual bent lever long usedin the Davis sewing-machine, which, as it is well known and IOO forms nopart of this.invention,needs no illustration or particular description.'The needle-bar is likewise connected with and operates the take-up inthe usual way.

The sliding cross-bar J carries the rolls M N, which embrace betweenthem the vertical bars C D, so that the three bars move togetherhorizontally back and forth.

The regulating-lever G is carried by the cross-bar J, the stud U, whichis fixed to the side of the lever G near one end, and serves as thepivot for said lever, being j ournalled in said cross-bar. The oppositeend ofthe regulatin lever has a lateral projection which extends overthe enlarged end of the cross-bar J, andV is provided with the set-screwI, which is tapped into said projection and adapted, when set down, tohold the regulating-lever in whatever position it isadj usted to. Thefront end of cross-bar J is arc-shaped, with the axis of stud U as acenter, to facilitate the adjustment of the regulating-lever. Theregulating-yoke F is attached to and movable with the lever G. The leverG, yoke F, and stud U are or may be cast in one piece.

The feed-lever E turns upon the stud K, xed to the side (right hand,Fig. 3) wall of the cam-house. The upper arm, which carries the roll L,is engaged by the feed-cam T B, the said roll L-fitting and working insaid camgroove T. For convenience the groove is lmade in the inner(right hand, Fig. 3) face of the shaft-head or cam-disk B. The lower armof the feed-lever, which carries the roll R, engages theregulating-yoke'F. By the rotation of the shaft Q and feed-cam T B thelever E is vibrated, and the roll R, acting upon the yoke F,reciprocates the sliding cross-bar J, which, of course, carries with itthe needlebar C and helper-bar D. The stroke of the cross-bar dependsupon the inclination of the yoke F, which can be varied by adjusting thefree end of lever G up-or down, thereby diminishing orincreasing thestroke.

Fig. 1 shows the position of the feeding devices with the roll L in thecam-groove T at a point nearest the shaft, and the regulatinglever G atits highest point, holding the U- shaped yoke F in an inclined position,so that upon rotating the shaft-head B'the cam-groove T, acting uponroll L, will cause the feed-lever E to vibrate, carrying roll L up anddown the yoke F without any effect upon kcross-bar J, to

which the yoke F and its lever G are pivoted.V

Fig. 2 shows the position of the feeding devices with the roll L in .thecam-groove T at a point farthest from the center of the shaft O, and theregulating-lever G at its lowest point, with the U-shaped yoke inavertical position.

`It will be observed that the feed-lever E being firmly pivoted to thecam-house A, as

` shown at K, and the yoke F being pivoted to the sliding cross-bar J,the position of bellcrank and yoke, as shown in Fig. 2, has drawnbetween the rolls M and N, as shown in detail in Fig. 5. By rotatingtheshaft-head B so as to bring the feed-lever E back to its position, asshown in Fig. 1, the roll R, working in the yoke F, brings the slidingcross-bar 'back to the position shown in Fig. 1. The position of yoke Fin Fig. 2 gives movement enough to sliding cross-bar J to produce a verylong stitch; but by raising lever G and clamping it in any intermediateposition by means of the screw I the length of stitch can be regulatedas desired.

It will be observed that by the use of the improved mechanism thelateral movement of the needle and helper bars is made positive bothways, and that said bars are always under the control of the feed-cam,it not being necessary to depend on a spring for returning the bars to avertical position, or for other purpose, although one or more springscan be used, if desired.

The feed-cam B, the needle-cam C', and the needle-cam roll or driver Bare s'o arranged that the cross-bar J and the vertical bars C D aremoved in the direction ofthe feed (to the left, Figs. 1 and 2) after theneedle-bar and helper-bar have descended, and that the reverse or returnmovement takes place after the foot of the helper-bar and the needlehave been raised clear of the work.

In Fig. 6 the construction and operation are substantially the same asdescribed with referenceto Figs. l to 5, but changes have 'been made indetails. Thus the yoke F is inverted and the regulating-lever is pivotednear the front, instead of the rear, ofthe cross-bar, theregulating-lever is shortened, the pivot ofthe feed-lever is placedtoward the rear, (left hand, Figs. 1, 2, and 6,-) and the shape of thefeedlever is somewhat altered.

As shown, the shaft Q runs toward the op erator who sits at the front ofthe machine. The effect of this is, that the needle-cam roll or driver,by its action on the needle-cam, aids in returning the needle-bar to avertical position, and in holding it in that position during itsdescent, instead of tending to displace it, as it would do if the shaftwere run in the opposite direction. For a full explanation of theoperation, reference may be had to the pat- IOO IIO

ent of Wm. S. Carlisle for improvements in j ofthe ordinary or of othersuitable construc-` tion.

Modifications may be made in the details of construction withoutdeparting from the spirit of the invention, and parts of the inventioncould be separately used, if desired.

The term vertical feeding devices 7 is used herein to include one ormore such devices.

Having now fully described my said invention and the manner of carryingthe same into effect, what I claim is- 1. The combination, with theneedle-bar and helper-bar, both of them movable vertically andlaterally,of a feed-cam placed in the cam house or head of the machine, andreciprocating parts operated by said cam` for imparting lateral movementto said bars, said reciproeating parts, having constantly a positiveconnection With said cam and feeding devices and with each other, sothat the movement of said feeding devices independently of the feed-camis atall times prevented, substantially as described.

2. The combination, with the needle-bar and helper-bar, both of themmovable vertically and laterally, of a grooved feed-cam, a feedleveroperated thereby, devices for communicating from said lever to said barsa back-andforth movement positive in both directions, and means forregulating the extent of said movement, substantially as described.

3. In a feed mechanism for sewing-machines, the adjustable yoke, incombination with the feeding devices and auxiliary operating means,

said yoke being movable With said feeding devices, substantially asdescribed.

4. The Combination, with vertical feeding devices, of the slidingcross-bar, the grooved cam, a device engaged by the groove of said cam,so as to be reciprocated thereby, and connections for imparting fromsaid reciprocatory device the return as Well as the advance movement tosaid cross-bar, and through it to the vertical feeding devices,substantially as described. j

5. The combination of the sliding cross-bar, the adjustable yoke, andthe feedlever with means for vibrating said lever, substantially asdescribed.

6. The combination of the grooved cam, the lever, the sliding bar, andthe adjustable yoke, substantially as described.

7. The combination of the vertical feeding devices, the groovedfeed-cani, the feed-lever,

the sliding cross-bar, the adjustable yoke, and

the rolls on said cross-banand lever, substantially as described.

In testim ony whereof I have signed this spectfication in the presenceof two subscribing vWit- IleSSGS.

EDGAR D. FELLOWS.

Vitnesses: Y

LEVI A. JoHNsoN, JAMES C. BUR'r.

